Table 1. Characteristics of patients.
| R25 (n = 23) | MR (n = 25) | R375 (n = 22) | P value | |
|---|---|---|---|---|
| Age (years) | 60.5±5.0 | 59.7±5.3 | 62.2±5.0 | 0.243 |
| BMI(kg/m2) | 22.29±1.1 | 22.80±1.2 | 22.04±1.25 | 0.083 |
| Male / Female | 11 / 12 | 12 / 13 | 13 / 9 | 0.686 |
| DM (years) | 8.30±2.9 | 9.12±3.3 | 7.55±3.2 | 0.208 |
| DM foot ulcer duration (day) | 24[15,42] | 27[15,51.5] | 30.5[16,43.5] | 0.375 |
| Number of claimed toes | 2[1,3] | 2[1,3] | 2[1,3] | 1.000 |
| Duration of surgery (min) | 37.04±6.1 | 35.6±7.7 | 35.14±7.8 | 0.788 |
| Serum Mg concentration (mmol/l) | 0.79±0.06 | 0.78±0.07 | 0.77±0.06 | 0.697 |
BMI: Body mass index;
Values were expressed as number, mean ± SD or median [interquartile ranges].
R25: Perineural 0.25% ropivacaine with 15ml volume; MR: Perineural 200mg MgSO4 plus 0.25% ropivacaine with 15ml volume; R375: Perineural 0.375% ropivacaine with 15ml volume.